Precision Extension

Gardner Precision Extension Springs are made to tighter dimensional and load tolerances than utility springs. Available in Music Wire and Stainless Steel, these parts are ideal for cyclic applications or when higher operating temperatures are required. Music Wire parts are Zinc Plated, Stainless Steel parts have plain finish.High Carbon Steel Music Wire (ASTM A228) parts are able to be cycled repeatedly and can operate at up to 250°F.Type 302 Stainless Steel springs (AISI 302, ASTM A313) offer greater corrosion resistance and perform well at up to 500°F.